We may hold unswervingly to our hope because he who promised is faithful (Heb. 10:23). He is faithful to forgive our sins (1 John 1:9), sanctify believers until the return of Christ (1 Thess. 5:23-24), strengthen and protect from the evil one (2 Thess. 3:3), and not let us be tempted beyond what we can bear (1 Cor. 10:13). Even if we are faithless, he remains faithful, for he cannot disown himself (2 Tim. 2:13).
– Gordon R. Lewis, “God, Attributes of,” Evangelical Dictionary of Theology, Ed. Walter A. Elwell, Second Edition (Grand Rapids: Baker, 2001), 495.